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Finding the Fourth Proportional to 666,862.59, 920,172.42 and 372,476.04

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Solution

The fourth proportional to 666,862.59, 920,172.42 and 372,476.04 is: 513,962.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,862.59 : 920,172.42 = 372,476.04 : x
  2. Step 2: Convert to fraction form
    666,862.59/920,172.42 = 372,476.04/x
  3. Step 3: Cross multiply
    666,862.59x = 920,172.42 × 372,476.04
  4. Step 4: Simplify right side
    666,862.59x = 342,742,179,118.82
  5. Step 5: Solve for x
    x = 342,742,179,118.82/666,862.59
  6. Step 6: Final answer
    x = 513,962.22

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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.