Home / 653,257,246.80-979,885,870.20-326,739,896.40

Finding the Fourth Proportional to 653,257,246.80, 979,885,870.20 and 326,739,896.40

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Solution

The fourth proportional to 653,257,246.80, 979,885,870.20 and 326,739,896.40 is: 490,109,844.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,257,246.80 : 979,885,870.20 = 326,739,896.40 : x
  2. Step 2: Convert to fraction form
    653,257,246.80/979,885,870.20 = 326,739,896.40/x
  3. Step 3: Cross multiply
    653,257,246.80x = 979,885,870.20 × 326,739,896.40
  4. Step 4: Simplify right side
    653,257,246.80x = 320,167,807,712,971,840
  5. Step 5: Solve for x
    x = 320,167,807,712,971,840/653,257,246.80
  6. Step 6: Final answer
    x = 490,109,844.60

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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.