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Finding the Fourth Proportional to 556,679.90, 768,218.10 and 302,031.02

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Solution

The fourth proportional to 556,679.90, 768,218.10 and 302,031.02 is: 416,802.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,679.90 : 768,218.10 = 302,031.02 : x
  2. Step 2: Convert to fraction form
    556,679.90/768,218.10 = 302,031.02/x
  3. Step 3: Cross multiply
    556,679.90x = 768,218.10 × 302,031.02
  4. Step 4: Simplify right side
    556,679.90x = 232,025,696,325.46
  5. Step 5: Solve for x
    x = 232,025,696,325.46/556,679.90
  6. Step 6: Final answer
    x = 416,802.72

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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.