Home / 1,210,190,171.34-1,670,045,460.29-674,364,420.31

Finding the Fourth Proportional to 1,210,190,171.34, 1,670,045,460.29 and 674,364,420.31

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Solution

The fourth proportional to 1,210,190,171.34, 1,670,045,460.29 and 674,364,420.31 is: 930,613,440.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,190,171.34 : 1,670,045,460.29 = 674,364,420.31 : x
  2. Step 2: Convert to fraction form
    1,210,190,171.34/1,670,045,460.29 = 674,364,420.31/x
  3. Step 3: Cross multiply
    1,210,190,171.34x = 1,670,045,460.29 × 674,364,420.31
  4. Step 4: Simplify right side
    1,210,190,171.34x = 1,126,219,238,708,090,880
  5. Step 5: Solve for x
    x = 1,126,219,238,708,090,880/1,210,190,171.34
  6. Step 6: Final answer
    x = 930,613,440.25

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Double scale
Find fourth proportional to 1,210,190,172.34, 1,670,045,461.66 and 674,364,421.31
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.