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Finding the Fourth Proportional to 553,607.40, 829,244.70 and 448,631.40

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Solution

The fourth proportional to 553,607.40, 829,244.70 and 448,631.40 is: 672,001.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,607.40 : 829,244.70 = 448,631.40 : x
  2. Step 2: Convert to fraction form
    553,607.40/829,244.70 = 448,631.40/x
  3. Step 3: Cross multiply
    553,607.40x = 829,244.70 × 448,631.40
  4. Step 4: Simplify right side
    553,607.40x = 372,025,210,703.58
  5. Step 5: Solve for x
    x = 372,025,210,703.58/553,607.40
  6. Step 6: Final answer
    x = 672,001.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.