Home / 648,034.10-972,051.15-487,070.90

Finding the Fourth Proportional to 648,034.10, 972,051.15 and 487,070.90

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Solution

The fourth proportional to 648,034.10, 972,051.15 and 487,070.90 is: 730,606.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,034.10 : 972,051.15 = 487,070.90 : x
  2. Step 2: Convert to fraction form
    648,034.10/972,051.15 = 487,070.90/x
  3. Step 3: Cross multiply
    648,034.10x = 972,051.15 × 487,070.90
  4. Step 4: Simplify right side
    648,034.10x = 473,457,828,476.54
  5. Step 5: Solve for x
    x = 473,457,828,476.54/648,034.10
  6. Step 6: Final answer
    x = 730,606.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.