Home / 649,821,328.48-974,636,279.70-213,168,154.96

Finding the Fourth Proportional to 649,821,328.48, 974,636,279.70 and 213,168,154.96

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Solution

The fourth proportional to 649,821,328.48, 974,636,279.70 and 213,168,154.96 is: 319,720,834.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,821,328.48 : 974,636,279.70 = 213,168,154.96 : x
  2. Step 2: Convert to fraction form
    649,821,328.48/974,636,279.70 = 213,168,154.96/x
  3. Step 3: Cross multiply
    649,821,328.48x = 974,636,279.70 × 213,168,154.96
  4. Step 4: Simplify right side
    649,821,328.48x = 207,761,417,500,727,520
  5. Step 5: Solve for x
    x = 207,761,417,500,727,520/649,821,328.48
  6. Step 6: Final answer
    x = 319,720,834.63

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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.