Home / 922,011,988.76-1,272,380,377.98-498,625,649.94

Finding the Fourth Proportional to 922,011,988.76, 1,272,380,377.98 and 498,625,649.94

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Solution

The fourth proportional to 922,011,988.76, 1,272,380,377.98 and 498,625,649.94 is: 688,105,470.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,011,988.76 : 1,272,380,377.98 = 498,625,649.94 : x
  2. Step 2: Convert to fraction form
    922,011,988.76/1,272,380,377.98 = 498,625,649.94/x
  3. Step 3: Cross multiply
    922,011,988.76x = 1,272,380,377.98 × 498,625,649.94
  4. Step 4: Simplify right side
    922,011,988.76x = 634,441,492,941,180,416
  5. Step 5: Solve for x
    x = 634,441,492,941,180,416/922,011,988.76
  6. Step 6: Final answer
    x = 688,105,470.08

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1.5x scale

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.