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Finding the Fourth Proportional to 630,545.94, 870,174.40 and 344,081.74

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Solution

The fourth proportional to 630,545.94, 870,174.40 and 344,081.74 is: 474,844.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,545.94 : 870,174.40 = 344,081.74 : x
  2. Step 2: Convert to fraction form
    630,545.94/870,174.40 = 344,081.74/x
  3. Step 3: Cross multiply
    630,545.94x = 870,174.40 × 344,081.74
  4. Step 4: Simplify right side
    630,545.94x = 299,411,121,655.46
  5. Step 5: Solve for x
    x = 299,411,121,655.46/630,545.94
  6. Step 6: Final answer
    x = 474,844.26

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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.