Home / 659,527,690.12-989,323,350.18-216,860,569.21

Finding the Fourth Proportional to 659,527,690.12, 989,323,350.18 and 216,860,569.21

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Solution

The fourth proportional to 659,527,690.12, 989,323,350.18 and 216,860,569.21 is: 325,301,314.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,527,690.12 : 989,323,350.18 = 216,860,569.21 : x
  2. Step 2: Convert to fraction form
    659,527,690.12/989,323,350.18 = 216,860,569.21/x
  3. Step 3: Cross multiply
    659,527,690.12x = 989,323,350.18 × 216,860,569.21
  4. Step 4: Simplify right side
    659,527,690.12x = 214,545,224,852,778,944
  5. Step 5: Solve for x
    x = 214,545,224,852,778,944/659,527,690.12
  6. Step 6: Final answer
    x = 325,301,314.97

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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.