Home / 790,806,089.42-1,091,312,387.16-438,381,187.10

Finding the Fourth Proportional to 790,806,089.42, 1,091,312,387.16 and 438,381,187.10

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Solution

The fourth proportional to 790,806,089.42, 1,091,312,387.16 and 438,381,187.10 is: 604,966,029.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,806,089.42 : 1,091,312,387.16 = 438,381,187.10 : x
  2. Step 2: Convert to fraction form
    790,806,089.42/1,091,312,387.16 = 438,381,187.10/x
  3. Step 3: Cross multiply
    790,806,089.42x = 1,091,312,387.16 × 438,381,187.10
  4. Step 4: Simplify right side
    790,806,089.42x = 478,410,819,780,135,680
  5. Step 5: Solve for x
    x = 478,410,819,780,135,680/790,806,089.42
  6. Step 6: Final answer
    x = 604,966,029.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.