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Finding the Fourth Proportional to 515,282.90, 710,436.54 and 368,283.20

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Solution

The fourth proportional to 515,282.90, 710,436.54 and 368,283.20 is: 507,763.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,282.90 : 710,436.54 = 368,283.20 : x
  2. Step 2: Convert to fraction form
    515,282.90/710,436.54 = 368,283.20/x
  3. Step 3: Cross multiply
    515,282.90x = 710,436.54 × 368,283.20
  4. Step 4: Simplify right side
    515,282.90x = 261,641,842,348.13
  5. Step 5: Solve for x
    x = 261,641,842,348.13/515,282.90
  6. Step 6: Final answer
    x = 507,763.49

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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.