Home / 528,364.28-729,425.58-407,240.12

Finding the Fourth Proportional to 528,364.28, 729,425.58 and 407,240.12

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Solution

The fourth proportional to 528,364.28, 729,425.58 and 407,240.12 is: 562,209.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,364.28 : 729,425.58 = 407,240.12 : x
  2. Step 2: Convert to fraction form
    528,364.28/729,425.58 = 407,240.12/x
  3. Step 3: Cross multiply
    528,364.28x = 729,425.58 × 407,240.12
  4. Step 4: Simplify right side
    528,364.28x = 297,051,360,730.27
  5. Step 5: Solve for x
    x = 297,051,360,730.27/528,364.28
  6. Step 6: Final answer
    x = 562,209.39

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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.