Home / 528,666.32-729,539.96-286,943.70

Finding the Fourth Proportional to 528,666.32, 729,539.96 and 286,943.70

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Solution

The fourth proportional to 528,666.32, 729,539.96 and 286,943.70 is: 395,971.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,666.32 : 729,539.96 = 286,943.70 : x
  2. Step 2: Convert to fraction form
    528,666.32/729,539.96 = 286,943.70/x
  3. Step 3: Cross multiply
    528,666.32x = 729,539.96 × 286,943.70
  4. Step 4: Simplify right side
    528,666.32x = 209,336,895,420.25
  5. Step 5: Solve for x
    x = 209,336,895,420.25/528,666.32
  6. Step 6: Final answer
    x = 395,971.69

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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.