Home / 717,870,574.40-1,076,805,861.60-257,879,739.20

Finding the Fourth Proportional to 717,870,574.40, 1,076,805,861.60 and 257,879,739.20

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Solution

The fourth proportional to 717,870,574.40, 1,076,805,861.60 and 257,879,739.20 is: 386,819,608.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,870,574.40 : 1,076,805,861.60 = 257,879,739.20 : x
  2. Step 2: Convert to fraction form
    717,870,574.40/1,076,805,861.60 = 257,879,739.20/x
  3. Step 3: Cross multiply
    717,870,574.40x = 1,076,805,861.60 × 257,879,739.20
  4. Step 4: Simplify right side
    717,870,574.40x = 277,686,414,758,439,264
  5. Step 5: Solve for x
    x = 277,686,414,758,439,264/717,870,574.40
  6. Step 6: Final answer
    x = 386,819,608.80

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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.