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Finding the Fourth Proportional to 630,598.89, 870,252.60 and 358,714.68

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Solution

The fourth proportional to 630,598.89, 870,252.60 and 358,714.68 is: 495,041.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,598.89 : 870,252.60 = 358,714.68 : x
  2. Step 2: Convert to fraction form
    630,598.89/870,252.60 = 358,714.68/x
  3. Step 3: Cross multiply
    630,598.89x = 870,252.60 × 358,714.68
  4. Step 4: Simplify right side
    630,598.89x = 312,172,382,928.17
  5. Step 5: Solve for x
    x = 312,172,382,928.17/630,598.89
  6. Step 6: Final answer
    x = 495,041.12

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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.