Home / 520,015,967.40-780,023,951.10-213,528,037.80

Finding the Fourth Proportional to 520,015,967.40, 780,023,951.10 and 213,528,037.80

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Solution

The fourth proportional to 520,015,967.40, 780,023,951.10 and 213,528,037.80 is: 320,292,056.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,015,967.40 : 780,023,951.10 = 213,528,037.80 : x
  2. Step 2: Convert to fraction form
    520,015,967.40/780,023,951.10 = 213,528,037.80/x
  3. Step 3: Cross multiply
    520,015,967.40x = 780,023,951.10 × 213,528,037.80
  4. Step 4: Simplify right side
    520,015,967.40x = 166,556,983,715,386,176
  5. Step 5: Solve for x
    x = 166,556,983,715,386,176/520,015,967.40
  6. Step 6: Final answer
    x = 320,292,056.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.