Home / 487,096,612.92-672,290,979.80-288,968,081.67

Finding the Fourth Proportional to 487,096,612.92, 672,290,979.80 and 288,968,081.67

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Solution

The fourth proportional to 487,096,612.92, 672,290,979.80 and 288,968,081.67 is: 398,833,885.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,096,612.92 : 672,290,979.80 = 288,968,081.67 : x
  2. Step 2: Convert to fraction form
    487,096,612.92/672,290,979.80 = 288,968,081.67/x
  3. Step 3: Cross multiply
    487,096,612.92x = 672,290,979.80 × 288,968,081.67
  4. Step 4: Simplify right side
    487,096,612.92x = 194,270,634,756,850,720
  5. Step 5: Solve for x
    x = 194,270,634,756,850,720/487,096,612.92
  6. Step 6: Final answer
    x = 398,833,885.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.