Home / 910,064.70-1,256,139.09-528,214.50

Finding the Fourth Proportional to 910,064.70, 1,256,139.09 and 528,214.50

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Solution

The fourth proportional to 910,064.70, 1,256,139.09 and 528,214.50 is: 729,081.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,064.70 : 1,256,139.09 = 528,214.50 : x
  2. Step 2: Convert to fraction form
    910,064.70/1,256,139.09 = 528,214.50/x
  3. Step 3: Cross multiply
    910,064.70x = 1,256,139.09 × 528,214.50
  4. Step 4: Simplify right side
    910,064.70x = 663,510,881,354.81
  5. Step 5: Solve for x
    x = 663,510,881,354.81/910,064.70
  6. Step 6: Final answer
    x = 729,081.00

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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.