Home / 1,279,639,155.94-1,765,908,565.28-715,133,459.26

Finding the Fourth Proportional to 1,279,639,155.94, 1,765,908,565.28 and 715,133,459.26

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Solution

The fourth proportional to 1,279,639,155.94, 1,765,908,565.28 and 715,133,459.26 is: 986,887,823.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,639,155.94 : 1,765,908,565.28 = 715,133,459.26 : x
  2. Step 2: Convert to fraction form
    1,279,639,155.94/1,765,908,565.28 = 715,133,459.26/x
  3. Step 3: Cross multiply
    1,279,639,155.94x = 1,765,908,565.28 × 715,133,459.26
  4. Step 4: Simplify right side
    1,279,639,155.94x = 1,262,860,301,013,144,832
  5. Step 5: Solve for x
    x = 1,262,860,301,013,144,832/1,279,639,155.94
  6. Step 6: Final answer
    x = 986,887,823.15

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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.