Home / 660,574,989.34-990,207,984.70-310,193,840.59

Finding the Fourth Proportional to 660,574,989.34, 990,207,984.70 and 310,193,840.59

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Solution

The fourth proportional to 660,574,989.34, 990,207,984.70 and 310,193,840.59 is: 464,983,420.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,574,989.34 : 990,207,984.70 = 310,193,840.59 : x
  2. Step 2: Convert to fraction form
    660,574,989.34/990,207,984.70 = 310,193,840.59/x
  3. Step 3: Cross multiply
    660,574,989.34x = 990,207,984.70 × 310,193,840.59
  4. Step 4: Simplify right side
    660,574,989.34x = 307,156,417,756,976,960
  5. Step 5: Solve for x
    x = 307,156,417,756,976,960/660,574,989.34
  6. Step 6: Final answer
    x = 464,983,420.07

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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.