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Finding the Fourth Proportional to 702,005.80, 1,053,008.70 and 403,407.40

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Solution

The fourth proportional to 702,005.80, 1,053,008.70 and 403,407.40 is: 605,111.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,005.80 : 1,053,008.70 = 403,407.40 : x
  2. Step 2: Convert to fraction form
    702,005.80/1,053,008.70 = 403,407.40/x
  3. Step 3: Cross multiply
    702,005.80x = 1,053,008.70 × 403,407.40
  4. Step 4: Simplify right side
    702,005.80x = 424,791,501,844.38
  5. Step 5: Solve for x
    x = 424,791,501,844.38/702,005.80
  6. Step 6: Final answer
    x = 605,111.10

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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.