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Finding the Fourth Proportional to 628,770, 865,781.08 and 473,946.20

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Solution

The fourth proportional to 628,770, 865,781.08 and 473,946.20 is: 652,597.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,770 : 865,781.08 = 473,946.20 : x
  2. Step 2: Convert to fraction form
    628,770/865,781.08 = 473,946.20/x
  3. Step 3: Cross multiply
    628,770x = 865,781.08 × 473,946.20
  4. Step 4: Simplify right side
    628,770x = 410,333,652,897.90
  5. Step 5: Solve for x
    x = 410,333,652,897.90/628,770
  6. Step 6: Final answer
    x = 652,597.38

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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.