Home / 761,145.40-1,140,335.70-620,140.60

Finding the Fourth Proportional to 761,145.40, 1,140,335.70 and 620,140.60

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Solution

The fourth proportional to 761,145.40, 1,140,335.70 and 620,140.60 is: 929,084.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,145.40 : 1,140,335.70 = 620,140.60 : x
  2. Step 2: Convert to fraction form
    761,145.40/1,140,335.70 = 620,140.60/x
  3. Step 3: Cross multiply
    761,145.40x = 1,140,335.70 × 620,140.60
  4. Step 4: Simplify right side
    761,145.40x = 707,168,465,199.42
  5. Step 5: Solve for x
    x = 707,168,465,199.42/761,145.40
  6. Step 6: Final answer
    x = 929,084.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.