Home / 1,215,429,030.11-1,676,778,457.72-813,672,218.86

Finding the Fourth Proportional to 1,215,429,030.11, 1,676,778,457.72 and 813,672,218.86

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Solution

The fourth proportional to 1,215,429,030.11, 1,676,778,457.72 and 813,672,218.86 is: 1,122,523,828.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,429,030.11 : 1,676,778,457.72 = 813,672,218.86 : x
  2. Step 2: Convert to fraction form
    1,215,429,030.11/1,676,778,457.72 = 813,672,218.86/x
  3. Step 3: Cross multiply
    1,215,429,030.11x = 1,676,778,457.72 × 813,672,218.86
  4. Step 4: Simplify right side
    1,215,429,030.11x = 1,364,348,048,229,681,152
  5. Step 5: Solve for x
    x = 1,364,348,048,229,681,152/1,215,429,030.11
  6. Step 6: Final answer
    x = 1,122,523,828.57

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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.