Home / 910,289,345.61-1,256,199,298.56-492,601,630.76

Finding the Fourth Proportional to 910,289,345.61, 1,256,199,298.56 and 492,601,630.76

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Solution

The fourth proportional to 910,289,345.61, 1,256,199,298.56 and 492,601,630.76 is: 679,790,251.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,289,345.61 : 1,256,199,298.56 = 492,601,630.76 : x
  2. Step 2: Convert to fraction form
    910,289,345.61/1,256,199,298.56 = 492,601,630.76/x
  3. Step 3: Cross multiply
    910,289,345.61x = 1,256,199,298.56 × 492,601,630.76
  4. Step 4: Simplify right side
    910,289,345.61x = 618,805,823,023,943,040
  5. Step 5: Solve for x
    x = 618,805,823,023,943,040/910,289,345.61
  6. Step 6: Final answer
    x = 679,790,251.32

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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.