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Finding the Fourth Proportional to 562,611.83, 776,385 and 320,972.63

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Solution

The fourth proportional to 562,611.83, 776,385 and 320,972.63 is: 442,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,611.83 : 776,385 = 320,972.63 : x
  2. Step 2: Convert to fraction form
    562,611.83/776,385 = 320,972.63/x
  3. Step 3: Cross multiply
    562,611.83x = 776,385 × 320,972.63
  4. Step 4: Simplify right side
    562,611.83x = 249,198,331,460.63
  5. Step 5: Solve for x
    x = 249,198,331,460.63/562,611.83
  6. Step 6: Final answer
    x = 442,931.20

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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.