Home / 772,404.02-1,065,980.67-428,347.70

Finding the Fourth Proportional to 772,404.02, 1,065,980.67 and 428,347.70

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Solution

The fourth proportional to 772,404.02, 1,065,980.67 and 428,347.70 is: 591,154.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,404.02 : 1,065,980.67 = 428,347.70 : x
  2. Step 2: Convert to fraction form
    772,404.02/1,065,980.67 = 428,347.70/x
  3. Step 3: Cross multiply
    772,404.02x = 1,065,980.67 × 428,347.70
  4. Step 4: Simplify right side
    772,404.02x = 456,610,368,238.96
  5. Step 5: Solve for x
    x = 456,610,368,238.96/772,404.02
  6. Step 6: Final answer
    x = 591,154.83

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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.