Home / 779,457.55-1,075,742.18-648,403.70

Finding the Fourth Proportional to 779,457.55, 1,075,742.18 and 648,403.70

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Solution

The fourth proportional to 779,457.55, 1,075,742.18 and 648,403.70 is: 894,872.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,457.55 : 1,075,742.18 = 648,403.70 : x
  2. Step 2: Convert to fraction form
    779,457.55/1,075,742.18 = 648,403.70/x
  3. Step 3: Cross multiply
    779,457.55x = 1,075,742.18 × 648,403.70
  4. Step 4: Simplify right side
    779,457.55x = 697,515,203,941.85
  5. Step 5: Solve for x
    x = 697,515,203,941.85/779,457.55
  6. Step 6: Final answer
    x = 894,872.59

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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.