Home / 724,813.60-1,087,220.40-717,815.20

Finding the Fourth Proportional to 724,813.60, 1,087,220.40 and 717,815.20

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Solution

The fourth proportional to 724,813.60, 1,087,220.40 and 717,815.20 is: 1,076,722.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,813.60 : 1,087,220.40 = 717,815.20 : x
  2. Step 2: Convert to fraction form
    724,813.60/1,087,220.40 = 717,815.20/x
  3. Step 3: Cross multiply
    724,813.60x = 1,087,220.40 × 717,815.20
  4. Step 4: Simplify right side
    724,813.60x = 780,423,328,870.08
  5. Step 5: Solve for x
    x = 780,423,328,870.08/724,813.60
  6. Step 6: Final answer
    x = 1,076,722.80

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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.