Home / 525,887,312.40-787,319,314.20-321,813,968.40

Finding the Fourth Proportional to 525,887,312.40, 787,319,314.20 and 321,813,968.40

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Solution

The fourth proportional to 525,887,312.40, 787,319,314.20 and 321,813,968.40 is: 481,795,903.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,887,312.40 : 787,319,314.20 = 321,813,968.40 : x
  2. Step 2: Convert to fraction form
    525,887,312.40/787,319,314.20 = 321,813,968.40/x
  3. Step 3: Cross multiply
    525,887,312.40x = 787,319,314.20 × 321,813,968.40
  4. Step 4: Simplify right side
    525,887,312.40x = 253,370,352,900,668,480
  5. Step 5: Solve for x
    x = 253,370,352,900,668,480/525,887,312.40
  6. Step 6: Final answer
    x = 481,795,903.66

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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.