Home / 1,398,692,930.16-1,930,145,683.68-772,147,931.52

Finding the Fourth Proportional to 1,398,692,930.16, 1,930,145,683.68 and 772,147,931.52

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Solution

The fourth proportional to 1,398,692,930.16, 1,930,145,683.68 and 772,147,931.52 is: 1,065,536,233.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,692,930.16 : 1,930,145,683.68 = 772,147,931.52 : x
  2. Step 2: Convert to fraction form
    1,398,692,930.16/1,930,145,683.68 = 772,147,931.52/x
  3. Step 3: Cross multiply
    1,398,692,930.16x = 1,930,145,683.68 × 772,147,931.52
  4. Step 4: Simplify right side
    1,398,692,930.16x = 1,490,357,997,185,768,192
  5. Step 5: Solve for x
    x = 1,490,357,997,185,768,192/1,398,692,930.16
  6. Step 6: Final answer
    x = 1,065,536,233.90

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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.