Home / 788,491.40-1,182,737.10-489,309.80

Finding the Fourth Proportional to 788,491.40, 1,182,737.10 and 489,309.80

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Solution

The fourth proportional to 788,491.40, 1,182,737.10 and 489,309.80 is: 733,964.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,491.40 : 1,182,737.10 = 489,309.80 : x
  2. Step 2: Convert to fraction form
    788,491.40/1,182,737.10 = 489,309.80/x
  3. Step 3: Cross multiply
    788,491.40x = 1,182,737.10 × 489,309.80
  4. Step 4: Simplify right side
    788,491.40x = 578,724,853,853.58
  5. Step 5: Solve for x
    x = 578,724,853,853.58/788,491.40
  6. Step 6: Final answer
    x = 733,964.70

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1.5x scale

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.