Home / 818,283.81-1,129,150.76-455,741.40

Finding the Fourth Proportional to 818,283.81, 1,129,150.76 and 455,741.40

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Solution

The fourth proportional to 818,283.81, 1,129,150.76 and 455,741.40 is: 628,878.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,283.81 : 1,129,150.76 = 455,741.40 : x
  2. Step 2: Convert to fraction form
    818,283.81/1,129,150.76 = 455,741.40/x
  3. Step 3: Cross multiply
    818,283.81x = 1,129,150.76 × 455,741.40
  4. Step 4: Simplify right side
    818,283.81x = 514,600,748,173.46
  5. Step 5: Solve for x
    x = 514,600,748,173.46/818,283.81
  6. Step 6: Final answer
    x = 628,878.08

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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.