Home / 918,011.80-1,377,017.70-385,355.80

Finding the Fourth Proportional to 918,011.80, 1,377,017.70 and 385,355.80

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Solution

The fourth proportional to 918,011.80, 1,377,017.70 and 385,355.80 is: 578,033.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,011.80 : 1,377,017.70 = 385,355.80 : x
  2. Step 2: Convert to fraction form
    918,011.80/1,377,017.70 = 385,355.80/x
  3. Step 3: Cross multiply
    918,011.80x = 1,377,017.70 × 385,355.80
  4. Step 4: Simplify right side
    918,011.80x = 530,641,757,397.66
  5. Step 5: Solve for x
    x = 530,641,757,397.66/918,011.80
  6. Step 6: Final answer
    x = 578,033.70

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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.