Home / 660,574,988.34-990,207,983.21-310,193,839.59

Finding the Fourth Proportional to 660,574,988.34, 990,207,983.21 and 310,193,839.59

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Solution

The fourth proportional to 660,574,988.34, 990,207,983.21 and 310,193,839.59 is: 464,983,418.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,574,988.34 : 990,207,983.21 = 310,193,839.59 : x
  2. Step 2: Convert to fraction form
    660,574,988.34/990,207,983.21 = 310,193,839.59/x
  3. Step 3: Cross multiply
    660,574,988.34x = 990,207,983.21 × 310,193,839.59
  4. Step 4: Simplify right side
    660,574,988.34x = 307,156,416,303,029,184
  5. Step 5: Solve for x
    x = 307,156,416,303,029,184/660,574,988.34
  6. Step 6: Final answer
    x = 464,983,418.57

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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.