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Finding the Fourth Proportional to 870,439,246.40, 1,305,658,869.60 and 870,439,246.40

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Solution

The fourth proportional to 870,439,246.40, 1,305,658,869.60 and 870,439,246.40 is: 1,305,658,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,439,246.40 : 1,305,658,869.60 = 870,439,246.40 : x
  2. Step 2: Convert to fraction form
    870,439,246.40/1,305,658,869.60 = 870,439,246.40/x
  3. Step 3: Cross multiply
    870,439,246.40x = 1,305,658,869.60 × 870,439,246.40
  4. Step 4: Simplify right side
    870,439,246.40x = 1,136,496,722,510,099,712
  5. Step 5: Solve for x
    x = 1,136,496,722,510,099,712/870,439,246.40
  6. Step 6: Final answer
    x = 1,305,658,869.60

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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.