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Finding the Fourth Proportional to 665,482.83, 917,290.40 and 520,035.83

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Solution

The fourth proportional to 665,482.83, 917,290.40 and 520,035.83 is: 716,808.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,482.83 : 917,290.40 = 520,035.83 : x
  2. Step 2: Convert to fraction form
    665,482.83/917,290.40 = 520,035.83/x
  3. Step 3: Cross multiply
    665,482.83x = 917,290.40 × 520,035.83
  4. Step 4: Simplify right side
    665,482.83x = 477,023,867,328.40
  5. Step 5: Solve for x
    x = 477,023,867,328.40/665,482.83
  6. Step 6: Final answer
    x = 716,808.68

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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.