Home / 918,019.90-1,377,029.85-286,932.70

Finding the Fourth Proportional to 918,019.90, 1,377,029.85 and 286,932.70

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Solution

The fourth proportional to 918,019.90, 1,377,029.85 and 286,932.70 is: 430,399.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,019.90 : 1,377,029.85 = 286,932.70 : x
  2. Step 2: Convert to fraction form
    918,019.90/1,377,029.85 = 286,932.70/x
  3. Step 3: Cross multiply
    918,019.90x = 1,377,029.85 × 286,932.70
  4. Step 4: Simplify right side
    918,019.90x = 395,114,892,841.10
  5. Step 5: Solve for x
    x = 395,114,892,841.10/918,019.90
  6. Step 6: Final answer
    x = 430,399.05

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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.