Home / 661,119,407.30-991,679,110.95-620,808,623.30

Finding the Fourth Proportional to 661,119,407.30, 991,679,110.95 and 620,808,623.30

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Solution

The fourth proportional to 661,119,407.30, 991,679,110.95 and 620,808,623.30 is: 931,212,934.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,119,407.30 : 991,679,110.95 = 620,808,623.30 : x
  2. Step 2: Convert to fraction form
    661,119,407.30/991,679,110.95 = 620,808,623.30/x
  3. Step 3: Cross multiply
    661,119,407.30x = 991,679,110.95 × 620,808,623.30
  4. Step 4: Simplify right side
    661,119,407.30x = 615,642,943,624,237,440
  5. Step 5: Solve for x
    x = 615,642,943,624,237,440/661,119,407.30
  6. Step 6: Final answer
    x = 931,212,934.95

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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.