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Finding the Fourth Proportional to 859,597,946.60, 1,286,653,547.10 and 678,199,418.60

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Solution

The fourth proportional to 859,597,946.60, 1,286,653,547.10 and 678,199,418.60 is: 1,015,134,681.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,597,946.60 : 1,286,653,547.10 = 678,199,418.60 : x
  2. Step 2: Convert to fraction form
    859,597,946.60/1,286,653,547.10 = 678,199,418.60/x
  3. Step 3: Cross multiply
    859,597,946.60x = 1,286,653,547.10 × 678,199,418.60
  4. Step 4: Simplify right side
    859,597,946.60x = 872,607,687,582,847,744
  5. Step 5: Solve for x
    x = 872,607,687,582,847,744/859,597,946.60
  6. Step 6: Final answer
    x = 1,015,134,681.32

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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.