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Finding the Fourth Proportional to 630,603.66, 870,251.40 and 344,142.21

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Solution

The fourth proportional to 630,603.66, 870,251.40 and 344,142.21 is: 474,926.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,603.66 : 870,251.40 = 344,142.21 : x
  2. Step 2: Convert to fraction form
    630,603.66/870,251.40 = 344,142.21/x
  3. Step 3: Cross multiply
    630,603.66x = 870,251.40 × 344,142.21
  4. Step 4: Simplify right side
    630,603.66x = 299,490,240,051.59
  5. Step 5: Solve for x
    x = 299,490,240,051.59/630,603.66
  6. Step 6: Final answer
    x = 474,926.26

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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.