Home / 780,936,468.17-1,170,788,354.42-387,191,812.23

Finding the Fourth Proportional to 780,936,468.17, 1,170,788,354.42 and 387,191,812.23

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Solution

The fourth proportional to 780,936,468.17, 1,170,788,354.42 and 387,191,812.23 is: 580,482,130.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,936,468.17 : 1,170,788,354.42 = 387,191,812.23 : x
  2. Step 2: Convert to fraction form
    780,936,468.17/1,170,788,354.42 = 387,191,812.23/x
  3. Step 3: Cross multiply
    780,936,468.17x = 1,170,788,354.42 × 387,191,812.23
  4. Step 4: Simplify right side
    780,936,468.17x = 453,319,664,683,723,392
  5. Step 5: Solve for x
    x = 453,319,664,683,723,392/780,936,468.17
  6. Step 6: Final answer
    x = 580,482,130.32

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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.