Home / 1,008,132.10-1,391,221.53-555,423.10

Finding the Fourth Proportional to 1,008,132.10, 1,391,221.53 and 555,423.10

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Solution

The fourth proportional to 1,008,132.10, 1,391,221.53 and 555,423.10 is: 766,483.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,132.10 : 1,391,221.53 = 555,423.10 : x
  2. Step 2: Convert to fraction form
    1,008,132.10/1,391,221.53 = 555,423.10/x
  3. Step 3: Cross multiply
    1,008,132.10x = 1,391,221.53 × 555,423.10
  4. Step 4: Simplify right side
    1,008,132.10x = 772,716,571,501.29
  5. Step 5: Solve for x
    x = 772,716,571,501.29/1,008,132.10
  6. Step 6: Final answer
    x = 766,483.45

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Double scale
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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.