Home / 818,748,276.90-1,228,547,568.15-358,732,947.30

Finding the Fourth Proportional to 818,748,276.90, 1,228,547,568.15 and 358,732,947.30

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Solution

The fourth proportional to 818,748,276.90, 1,228,547,568.15 and 358,732,947.30 is: 538,285,700.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,748,276.90 : 1,228,547,568.15 = 358,732,947.30 : x
  2. Step 2: Convert to fraction form
    818,748,276.90/1,228,547,568.15 = 358,732,947.30/x
  3. Step 3: Cross multiply
    818,748,276.90x = 1,228,547,568.15 × 358,732,947.30
  4. Step 4: Simplify right side
    818,748,276.90x = 440,720,490,020,697,152
  5. Step 5: Solve for x
    x = 440,720,490,020,697,152/818,748,276.90
  6. Step 6: Final answer
    x = 538,285,700.81

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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.