Home / 772,561,856.80-1,158,842,785.20-742,429,152.10

Finding the Fourth Proportional to 772,561,856.80, 1,158,842,785.20 and 742,429,152.10

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Solution

The fourth proportional to 772,561,856.80, 1,158,842,785.20 and 742,429,152.10 is: 1,113,643,728.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,561,856.80 : 1,158,842,785.20 = 742,429,152.10 : x
  2. Step 2: Convert to fraction form
    772,561,856.80/1,158,842,785.20 = 742,429,152.10/x
  3. Step 3: Cross multiply
    772,561,856.80x = 1,158,842,785.20 × 742,429,152.10
  4. Step 4: Simplify right side
    772,561,856.80x = 860,358,666,433,238,528
  5. Step 5: Solve for x
    x = 860,358,666,433,238,528/772,561,856.80
  6. Step 6: Final answer
    x = 1,113,643,728.15

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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.