Home / 745,123.19-1,117,764.77-318,703.30

Finding the Fourth Proportional to 745,123.19, 1,117,764.77 and 318,703.30

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Solution

The fourth proportional to 745,123.19, 1,117,764.77 and 318,703.30 is: 478,089.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,123.19 : 1,117,764.77 = 318,703.30 : x
  2. Step 2: Convert to fraction form
    745,123.19/1,117,764.77 = 318,703.30/x
  3. Step 3: Cross multiply
    745,123.19x = 1,117,764.77 × 318,703.30
  4. Step 4: Simplify right side
    745,123.19x = 356,235,320,822.74
  5. Step 5: Solve for x
    x = 356,235,320,822.74/745,123.19
  6. Step 6: Final answer
    x = 478,089.16

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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.