Home / 521,457,547.20-782,280,799.20-262,019,860.80

Finding the Fourth Proportional to 521,457,547.20, 782,280,799.20 and 262,019,860.80

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Solution

The fourth proportional to 521,457,547.20, 782,280,799.20 and 262,019,860.80 is: 393,077,264.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,457,547.20 : 782,280,799.20 = 262,019,860.80 : x
  2. Step 2: Convert to fraction form
    521,457,547.20/782,280,799.20 = 262,019,860.80/x
  3. Step 3: Cross multiply
    521,457,547.20x = 782,280,799.20 × 262,019,860.80
  4. Step 4: Simplify right side
    521,457,547.20x = 204,973,106,112,896,768
  5. Step 5: Solve for x
    x = 204,973,106,112,896,768/521,457,547.20
  6. Step 6: Final answer
    x = 393,077,264.32

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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.