Home / 689,641,688.40-1,034,966,417.40-485,568,344.40

Finding the Fourth Proportional to 689,641,688.40, 1,034,966,417.40 and 485,568,344.40

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Solution

The fourth proportional to 689,641,688.40, 1,034,966,417.40 and 485,568,344.40 is: 728,707,295.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,641,688.40 : 1,034,966,417.40 = 485,568,344.40 : x
  2. Step 2: Convert to fraction form
    689,641,688.40/1,034,966,417.40 = 485,568,344.40/x
  3. Step 3: Cross multiply
    689,641,688.40x = 1,034,966,417.40 × 485,568,344.40
  4. Step 4: Simplify right side
    689,641,688.40x = 502,546,929,806,517,312
  5. Step 5: Solve for x
    x = 502,546,929,806,517,312/689,641,688.40
  6. Step 6: Final answer
    x = 728,707,295.77

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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.