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Finding the Fourth Proportional to 828,397.81, 1,240,603.81 and 472,332.34

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Solution

The fourth proportional to 828,397.81, 1,240,603.81 and 472,332.34 is: 707,362.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,397.81 : 1,240,603.81 = 472,332.34 : x
  2. Step 2: Convert to fraction form
    828,397.81/1,240,603.81 = 472,332.34/x
  3. Step 3: Cross multiply
    828,397.81x = 1,240,603.81 × 472,332.34
  4. Step 4: Simplify right side
    828,397.81x = 585,977,300,590.22
  5. Step 5: Solve for x
    x = 585,977,300,590.22/828,397.81
  6. Step 6: Final answer
    x = 707,362.20

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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.