Home / 390,865.10-588,925.28-353,467.40

Finding the Fourth Proportional to 390,865.10, 588,925.28 and 353,467.40

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Solution

The fourth proportional to 390,865.10, 588,925.28 and 353,467.40 is: 532,577.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,865.10 : 588,925.28 = 353,467.40 : x
  2. Step 2: Convert to fraction form
    390,865.10/588,925.28 = 353,467.40/x
  3. Step 3: Cross multiply
    390,865.10x = 588,925.28 × 353,467.40
  4. Step 4: Simplify right side
    390,865.10x = 208,165,885,454.91
  5. Step 5: Solve for x
    x = 208,165,885,454.91/390,865.10
  6. Step 6: Final answer
    x = 532,577.32

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.