Home / 712,917.74-1,069,511.48-286,486.76

Finding the Fourth Proportional to 712,917.74, 1,069,511.48 and 286,486.76

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Solution

The fourth proportional to 712,917.74, 1,069,511.48 and 286,486.76 is: 429,784.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,917.74 : 1,069,511.48 = 286,486.76 : x
  2. Step 2: Convert to fraction form
    712,917.74/1,069,511.48 = 286,486.76/x
  3. Step 3: Cross multiply
    712,917.74x = 1,069,511.48 × 286,486.76
  4. Step 4: Simplify right side
    712,917.74x = 306,400,871,908.01
  5. Step 5: Solve for x
    x = 306,400,871,908.01/712,917.74
  6. Step 6: Final answer
    x = 429,784.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.