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Finding the Fourth Proportional to 630,974.98, 870,733.65 and 359,036.74

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Solution

The fourth proportional to 630,974.98, 870,733.65 and 359,036.74 is: 495,463.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,974.98 : 870,733.65 = 359,036.74 : x
  2. Step 2: Convert to fraction form
    630,974.98/870,733.65 = 359,036.74/x
  3. Step 3: Cross multiply
    630,974.98x = 870,733.65 × 359,036.74
  4. Step 4: Simplify right side
    630,974.98x = 312,625,371,104.30
  5. Step 5: Solve for x
    x = 312,625,371,104.30/630,974.98
  6. Step 6: Final answer
    x = 495,463.97

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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.