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Finding the Fourth Proportional to 630,547.20, 870,152.76 and 344,064.78

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Solution

The fourth proportional to 630,547.20, 870,152.76 and 344,064.78 is: 474,808.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,547.20 : 870,152.76 = 344,064.78 : x
  2. Step 2: Convert to fraction form
    630,547.20/870,152.76 = 344,064.78/x
  3. Step 3: Cross multiply
    630,547.20x = 870,152.76 × 344,064.78
  4. Step 4: Simplify right side
    630,547.20x = 299,388,917,935.79
  5. Step 5: Solve for x
    x = 299,388,917,935.79/630,547.20
  6. Step 6: Final answer
    x = 474,808.10

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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.