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Finding the Fourth Proportional to 640,412.48, 883,197.08 and 531,344.12

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Solution

The fourth proportional to 640,412.48, 883,197.08 and 531,344.12 is: 732,780.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,412.48 : 883,197.08 = 531,344.12 : x
  2. Step 2: Convert to fraction form
    640,412.48/883,197.08 = 531,344.12/x
  3. Step 3: Cross multiply
    640,412.48x = 883,197.08 × 531,344.12
  4. Step 4: Simplify right side
    640,412.48x = 469,281,575,259.17
  5. Step 5: Solve for x
    x = 469,281,575,259.17/640,412.48
  6. Step 6: Final answer
    x = 732,780.18

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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.