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Finding the Fourth Proportional to 911,655.88, 1,258,085.08 and 509,247.88

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Solution

The fourth proportional to 911,655.88, 1,258,085.08 and 509,247.88 is: 702,762.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,655.88 : 1,258,085.08 = 509,247.88 : x
  2. Step 2: Convert to fraction form
    911,655.88/1,258,085.08 = 509,247.88/x
  3. Step 3: Cross multiply
    911,655.88x = 1,258,085.08 × 509,247.88
  4. Step 4: Simplify right side
    911,655.88x = 640,677,159,849.63
  5. Step 5: Solve for x
    x = 640,677,159,849.63/911,655.88
  6. Step 6: Final answer
    x = 702,762.06

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1.5x scale

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.