Home / 660,444,669.40-990,667,004.10-169,156,989.40

Finding the Fourth Proportional to 660,444,669.40, 990,667,004.10 and 169,156,989.40

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Solution

The fourth proportional to 660,444,669.40, 990,667,004.10 and 169,156,989.40 is: 253,735,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,444,669.40 : 990,667,004.10 = 169,156,989.40 : x
  2. Step 2: Convert to fraction form
    660,444,669.40/990,667,004.10 = 169,156,989.40/x
  3. Step 3: Cross multiply
    660,444,669.40x = 990,667,004.10 × 169,156,989.40
  4. Step 4: Simplify right side
    660,444,669.40x = 167,578,247,911,473,472
  5. Step 5: Solve for x
    x = 167,578,247,911,473,472/660,444,669.40
  6. Step 6: Final answer
    x = 253,735,484.10

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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.