Home / 1,561,931,508.48-2,155,459,568.76-857,095,285.20

Finding the Fourth Proportional to 1,561,931,508.48, 2,155,459,568.76 and 857,095,285.20

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Solution

The fourth proportional to 1,561,931,508.48, 2,155,459,568.76 and 857,095,285.20 is: 1,182,788,248.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561,931,508.48 : 2,155,459,568.76 = 857,095,285.20 : x
  2. Step 2: Convert to fraction form
    1,561,931,508.48/2,155,459,568.76 = 857,095,285.20/x
  3. Step 3: Cross multiply
    1,561,931,508.48x = 2,155,459,568.76 × 857,095,285.20
  4. Step 4: Simplify right side
    1,561,931,508.48x = 1,847,434,233,823,421,440
  5. Step 5: Solve for x
    x = 1,847,434,233,823,421,440/1,561,931,508.48
  6. Step 6: Final answer
    x = 1,182,788,248.90

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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.