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Finding the Fourth Proportional to 713,018.72, 1,070,118.88 and 358,134.32

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Solution

The fourth proportional to 713,018.72, 1,070,118.88 and 358,134.32 is: 537,498.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,018.72 : 1,070,118.88 = 358,134.32 : x
  2. Step 2: Convert to fraction form
    713,018.72/1,070,118.88 = 358,134.32/x
  3. Step 3: Cross multiply
    713,018.72x = 1,070,118.88 × 358,134.32
  4. Step 4: Simplify right side
    713,018.72x = 383,246,297,407.96
  5. Step 5: Solve for x
    x = 383,246,297,407.96/713,018.72
  6. Step 6: Final answer
    x = 537,498.23

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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.