Home / 918,345.60-1,377,609.12-287,271.36

Finding the Fourth Proportional to 918,345.60, 1,377,609.12 and 287,271.36

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Solution

The fourth proportional to 918,345.60, 1,377,609.12 and 287,271.36 is: 430,935.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,345.60 : 1,377,609.12 = 287,271.36 : x
  2. Step 2: Convert to fraction form
    918,345.60/1,377,609.12 = 287,271.36/x
  3. Step 3: Cross multiply
    918,345.60x = 1,377,609.12 × 287,271.36
  4. Step 4: Simplify right side
    918,345.60x = 395,747,645,450.80
  5. Step 5: Solve for x
    x = 395,747,645,450.80/918,345.60
  6. Step 6: Final answer
    x = 430,935.42

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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.