Home / 680,233,246.80-1,020,349,870.20-291,990,008.40

Finding the Fourth Proportional to 680,233,246.80, 1,020,349,870.20 and 291,990,008.40

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Solution

The fourth proportional to 680,233,246.80, 1,020,349,870.20 and 291,990,008.40 is: 437,985,012.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,233,246.80 : 1,020,349,870.20 = 291,990,008.40 : x
  2. Step 2: Convert to fraction form
    680,233,246.80/1,020,349,870.20 = 291,990,008.40/x
  3. Step 3: Cross multiply
    680,233,246.80x = 1,020,349,870.20 × 291,990,008.40
  4. Step 4: Simplify right side
    680,233,246.80x = 297,931,967,170,636,928
  5. Step 5: Solve for x
    x = 297,931,967,170,636,928/680,233,246.80
  6. Step 6: Final answer
    x = 437,985,012.60

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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.