Home / 739,948.70-1,021,130.10-400,416.95

Finding the Fourth Proportional to 739,948.70, 1,021,130.10 and 400,416.95

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Solution

The fourth proportional to 739,948.70, 1,021,130.10 and 400,416.95 is: 552,575.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,948.70 : 1,021,130.10 = 400,416.95 : x
  2. Step 2: Convert to fraction form
    739,948.70/1,021,130.10 = 400,416.95/x
  3. Step 3: Cross multiply
    739,948.70x = 1,021,130.10 × 400,416.95
  4. Step 4: Simplify right side
    739,948.70x = 408,877,795,089.55
  5. Step 5: Solve for x
    x = 408,877,795,089.55/739,948.70
  6. Step 6: Final answer
    x = 552,575.87

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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.