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Finding the Fourth Proportional to 485,570,931.84, 728,869,734.72 and 474,605,136

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Solution

The fourth proportional to 485,570,931.84, 728,869,734.72 and 474,605,136 is: 712,409,448.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,570,931.84 : 728,869,734.72 = 474,605,136 : x
  2. Step 2: Convert to fraction form
    485,570,931.84/728,869,734.72 = 474,605,136/x
  3. Step 3: Cross multiply
    485,570,931.84x = 728,869,734.72 × 474,605,136
  4. Step 4: Simplify right side
    485,570,931.84x = 345,925,319,573,069,504
  5. Step 5: Solve for x
    x = 345,925,319,573,069,504/485,570,931.84
  6. Step 6: Final answer
    x = 712,409,448.12

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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.