Home / 565,911,885.96-780,950,403.18-318,392,649.72

Finding the Fourth Proportional to 565,911,885.96, 780,950,403.18 and 318,392,649.72

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Solution

The fourth proportional to 565,911,885.96, 780,950,403.18 and 318,392,649.72 is: 439,377,355.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,911,885.96 : 780,950,403.18 = 318,392,649.72 : x
  2. Step 2: Convert to fraction form
    565,911,885.96/780,950,403.18 = 318,392,649.72/x
  3. Step 3: Cross multiply
    565,911,885.96x = 780,950,403.18 × 318,392,649.72
  4. Step 4: Simplify right side
    565,911,885.96x = 248,648,868,168,382,528
  5. Step 5: Solve for x
    x = 248,648,868,168,382,528/565,911,885.96
  6. Step 6: Final answer
    x = 439,377,355.98

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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.