Home / 918,223.80-1,377,335.70-385,567.80

Finding the Fourth Proportional to 918,223.80, 1,377,335.70 and 385,567.80

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Solution

The fourth proportional to 918,223.80, 1,377,335.70 and 385,567.80 is: 578,351.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,223.80 : 1,377,335.70 = 385,567.80 : x
  2. Step 2: Convert to fraction form
    918,223.80/1,377,335.70 = 385,567.80/x
  3. Step 3: Cross multiply
    918,223.80x = 1,377,335.70 × 385,567.80
  4. Step 4: Simplify right side
    918,223.80x = 531,056,295,710.46
  5. Step 5: Solve for x
    x = 531,056,295,710.46/918,223.80
  6. Step 6: Final answer
    x = 578,351.70

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Double scale
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Similar ratio
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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.