Home / 660,731,285.19-990,884,746.67-217,974,437.67

Finding the Fourth Proportional to 660,731,285.19, 990,884,746.67 and 217,974,437.67

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Solution

The fourth proportional to 660,731,285.19, 990,884,746.67 and 217,974,437.67 is: 326,891,658.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,731,285.19 : 990,884,746.67 = 217,974,437.67 : x
  2. Step 2: Convert to fraction form
    660,731,285.19/990,884,746.67 = 217,974,437.67/x
  3. Step 3: Cross multiply
    660,731,285.19x = 990,884,746.67 × 217,974,437.67
  4. Step 4: Simplify right side
    660,731,285.19x = 215,987,545,450,083,776
  5. Step 5: Solve for x
    x = 215,987,545,450,083,776/660,731,285.19
  6. Step 6: Final answer
    x = 326,891,658.21

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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.