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Finding the Fourth Proportional to 630,801.92, 870,498.99 and 358,869.19

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Solution

The fourth proportional to 630,801.92, 870,498.99 and 358,869.19 is: 495,235.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,801.92 : 870,498.99 = 358,869.19 : x
  2. Step 2: Convert to fraction form
    630,801.92/870,498.99 = 358,869.19/x
  3. Step 3: Cross multiply
    630,801.92x = 870,498.99 × 358,869.19
  4. Step 4: Simplify right side
    630,801.92x = 312,395,266,606.63
  5. Step 5: Solve for x
    x = 312,395,266,606.63/630,801.92
  6. Step 6: Final answer
    x = 495,235.13

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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.