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Finding the Fourth Proportional to 788,385,271.22, 1,087,978,723.67 and 435,984,972.65

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Solution

The fourth proportional to 788,385,271.22, 1,087,978,723.67 and 435,984,972.65 is: 601,663,160.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,385,271.22 : 1,087,978,723.67 = 435,984,972.65 : x
  2. Step 2: Convert to fraction form
    788,385,271.22/1,087,978,723.67 = 435,984,972.65/x
  3. Step 3: Cross multiply
    788,385,271.22x = 1,087,978,723.67 × 435,984,972.65
  4. Step 4: Simplify right side
    788,385,271.22x = 474,342,374,083,046,848
  5. Step 5: Solve for x
    x = 474,342,374,083,046,848/788,385,271.22
  6. Step 6: Final answer
    x = 601,663,160.64

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1.5x scale

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.