Home / 912,266.16-1,258,887.78-498,795.36

Finding the Fourth Proportional to 912,266.16, 1,258,887.78 and 498,795.36

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Solution

The fourth proportional to 912,266.16, 1,258,887.78 and 498,795.36 is: 688,315.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,266.16 : 1,258,887.78 = 498,795.36 : x
  2. Step 2: Convert to fraction form
    912,266.16/1,258,887.78 = 498,795.36/x
  3. Step 3: Cross multiply
    912,266.16x = 1,258,887.78 × 498,795.36
  4. Step 4: Simplify right side
    912,266.16x = 627,927,383,424.70
  5. Step 5: Solve for x
    x = 627,927,383,424.70/912,266.16
  6. Step 6: Final answer
    x = 688,315.99

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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.