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Finding the Fourth Proportional to 630,609.60, 870,243.66 and 344,136

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Solution

The fourth proportional to 630,609.60, 870,243.66 and 344,136 is: 474,909.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,609.60 : 870,243.66 = 344,136 : x
  2. Step 2: Convert to fraction form
    630,609.60/870,243.66 = 344,136/x
  3. Step 3: Cross multiply
    630,609.60x = 870,243.66 × 344,136
  4. Step 4: Simplify right side
    630,609.60x = 299,482,172,177.76
  5. Step 5: Solve for x
    x = 299,482,172,177.76/630,609.60
  6. Step 6: Final answer
    x = 474,909.00

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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.