Home / 840,143.72-1,159,467.20-477,681.32

Finding the Fourth Proportional to 840,143.72, 1,159,467.20 and 477,681.32

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Solution

The fourth proportional to 840,143.72, 1,159,467.20 and 477,681.32 is: 659,239.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,143.72 : 1,159,467.20 = 477,681.32 : x
  2. Step 2: Convert to fraction form
    840,143.72/1,159,467.20 = 477,681.32/x
  3. Step 3: Cross multiply
    840,143.72x = 1,159,467.20 × 477,681.32
  4. Step 4: Simplify right side
    840,143.72x = 553,855,822,592.70
  5. Step 5: Solve for x
    x = 553,855,822,592.70/840,143.72
  6. Step 6: Final answer
    x = 659,239.38

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Double scale
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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.