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Finding the Fourth Proportional to 630,813.83, 870,492.67 and 358,856.12

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Solution

The fourth proportional to 630,813.83, 870,492.67 and 358,856.12 is: 495,204.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,813.83 : 870,492.67 = 358,856.12 : x
  2. Step 2: Convert to fraction form
    630,813.83/870,492.67 = 358,856.12/x
  3. Step 3: Cross multiply
    630,813.83x = 870,492.67 × 358,856.12
  4. Step 4: Simplify right side
    630,813.83x = 312,381,625,342.30
  5. Step 5: Solve for x
    x = 312,381,625,342.30/630,813.83
  6. Step 6: Final answer
    x = 495,204.15

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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.