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Finding the Fourth Proportional to 630,616.15, 870,269.51 and 358,723.45

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Solution

The fourth proportional to 630,616.15, 870,269.51 and 358,723.45 is: 495,049.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,616.15 : 870,269.51 = 358,723.45 : x
  2. Step 2: Convert to fraction form
    630,616.15/870,269.51 = 358,723.45/x
  3. Step 3: Cross multiply
    630,616.15x = 870,269.51 × 358,723.45
  4. Step 4: Simplify right side
    630,616.15x = 312,186,081,057.01
  5. Step 5: Solve for x
    x = 312,186,081,057.01/630,616.15
  6. Step 6: Final answer
    x = 495,049.30

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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.