Home / 766,585,066.10-1,149,877,599.15-421,405,315.70

Finding the Fourth Proportional to 766,585,066.10, 1,149,877,599.15 and 421,405,315.70

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Solution

The fourth proportional to 766,585,066.10, 1,149,877,599.15 and 421,405,315.70 is: 632,107,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,585,066.10 : 1,149,877,599.15 = 421,405,315.70 : x
  2. Step 2: Convert to fraction form
    766,585,066.10/1,149,877,599.15 = 421,405,315.70/x
  3. Step 3: Cross multiply
    766,585,066.10x = 1,149,877,599.15 × 421,405,315.70
  4. Step 4: Simplify right side
    766,585,066.10x = 484,564,532,686,163,840
  5. Step 5: Solve for x
    x = 484,564,532,686,163,840/766,585,066.10
  6. Step 6: Final answer
    x = 632,107,973.55

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Double scale
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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.