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Finding the Fourth Proportional to 630,846.98, 870,557.59 and 358,909.02

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Solution

The fourth proportional to 630,846.98, 870,557.59 and 358,909.02 is: 495,288.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,846.98 : 870,557.59 = 358,909.02 : x
  2. Step 2: Convert to fraction form
    630,846.98/870,557.59 = 358,909.02/x
  3. Step 3: Cross multiply
    630,846.98x = 870,557.59 × 358,909.02
  4. Step 4: Simplify right side
    630,846.98x = 312,450,971,929.10
  5. Step 5: Solve for x
    x = 312,450,971,929.10/630,846.98
  6. Step 6: Final answer
    x = 495,288.05

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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.