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Finding the Fourth Proportional to 630,701.44, 870,391.98 and 358,794.16

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Solution

The fourth proportional to 630,701.44, 870,391.98 and 358,794.16 is: 495,149.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,701.44 : 870,391.98 = 358,794.16 : x
  2. Step 2: Convert to fraction form
    630,701.44/870,391.98 = 358,794.16/x
  3. Step 3: Cross multiply
    630,701.44x = 870,391.98 × 358,794.16
  4. Step 4: Simplify right side
    630,701.44x = 312,291,557,158.86
  5. Step 5: Solve for x
    x = 312,291,557,158.86/630,701.44
  6. Step 6: Final answer
    x = 495,149.59

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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.