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Finding the Fourth Proportional to 676,303.76, 933,297.72 and 389,821.88

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Solution

The fourth proportional to 676,303.76, 933,297.72 and 389,821.88 is: 537,953.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,303.76 : 933,297.72 = 389,821.88 : x
  2. Step 2: Convert to fraction form
    676,303.76/933,297.72 = 389,821.88/x
  3. Step 3: Cross multiply
    676,303.76x = 933,297.72 × 389,821.88
  4. Step 4: Simplify right side
    676,303.76x = 363,819,871,810.11
  5. Step 5: Solve for x
    x = 363,819,871,810.11/676,303.76
  6. Step 6: Final answer
    x = 537,953.35

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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.