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Finding the Fourth Proportional to 978,769,357.53, 1,350,730,946.63 and 602,642,935.65

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Solution

The fourth proportional to 978,769,357.53, 1,350,730,946.63 and 602,642,935.65 is: 831,665,250.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,769,357.53 : 1,350,730,946.63 = 602,642,935.65 : x
  2. Step 2: Convert to fraction form
    978,769,357.53/1,350,730,946.63 = 602,642,935.65/x
  3. Step 3: Cross multiply
    978,769,357.53x = 1,350,730,946.63 × 602,642,935.65
  4. Step 4: Simplify right side
    978,769,357.53x = 814,008,462,956,978,432
  5. Step 5: Solve for x
    x = 814,008,462,956,978,432/978,769,357.53
  6. Step 6: Final answer
    x = 831,665,250.55

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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.