Home / 776,697.15-1,071,289.95-518,443.91

Finding the Fourth Proportional to 776,697.15, 1,071,289.95 and 518,443.91

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Solution

The fourth proportional to 776,697.15, 1,071,289.95 and 518,443.91 is: 715,084.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,697.15 : 1,071,289.95 = 518,443.91 : x
  2. Step 2: Convert to fraction form
    776,697.15/1,071,289.95 = 518,443.91/x
  3. Step 3: Cross multiply
    776,697.15x = 1,071,289.95 × 518,443.91
  4. Step 4: Simplify right side
    776,697.15x = 555,403,745,065.26
  5. Step 5: Solve for x
    x = 555,403,745,065.26/776,697.15
  6. Step 6: Final answer
    x = 715,084.05

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1.5x scale

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.