Home / 528,665.81-729,539.27-286,943.24

Finding the Fourth Proportional to 528,665.81, 729,539.27 and 286,943.24

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Solution

The fourth proportional to 528,665.81, 729,539.27 and 286,943.24 is: 395,971.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,665.81 : 729,539.27 = 286,943.24 : x
  2. Step 2: Convert to fraction form
    528,665.81/729,539.27 = 286,943.24/x
  3. Step 3: Cross multiply
    528,665.81x = 729,539.27 × 286,943.24
  4. Step 4: Simplify right side
    528,665.81x = 209,336,360,406.32
  5. Step 5: Solve for x
    x = 209,336,360,406.32/528,665.81
  6. Step 6: Final answer
    x = 395,971.06

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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.