Home / 918,230.10-1,377,345.15-318,992.10

Finding the Fourth Proportional to 918,230.10, 1,377,345.15 and 318,992.10

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Solution

The fourth proportional to 918,230.10, 1,377,345.15 and 318,992.10 is: 478,488.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,230.10 : 1,377,345.15 = 318,992.10 : x
  2. Step 2: Convert to fraction form
    918,230.10/1,377,345.15 = 318,992.10/x
  3. Step 3: Cross multiply
    918,230.10x = 1,377,345.15 × 318,992.10
  4. Step 4: Simplify right side
    918,230.10x = 439,362,221,823.32
  5. Step 5: Solve for x
    x = 439,362,221,823.32/918,230.10
  6. Step 6: Final answer
    x = 478,488.15

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Half scale
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Double scale
Find fourth proportional to 918,231.10, 1,377,346.65 and 318,993.10
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.