Home / 708,287.28-977,407.93-385,990.45

Finding the Fourth Proportional to 708,287.28, 977,407.93 and 385,990.45

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Solution

The fourth proportional to 708,287.28, 977,407.93 and 385,990.45 is: 532,651.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,287.28 : 977,407.93 = 385,990.45 : x
  2. Step 2: Convert to fraction form
    708,287.28/977,407.93 = 385,990.45/x
  3. Step 3: Cross multiply
    708,287.28x = 977,407.93 × 385,990.45
  4. Step 4: Simplify right side
    708,287.28x = 377,270,124,804.32
  5. Step 5: Solve for x
    x = 377,270,124,804.32/708,287.28
  6. Step 6: Final answer
    x = 532,651.28

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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.