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Finding the Fourth Proportional to 528,423.93, 729,203.76 and 286,697.25

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Solution

The fourth proportional to 528,423.93, 729,203.76 and 286,697.25 is: 395,630.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,423.93 : 729,203.76 = 286,697.25 : x
  2. Step 2: Convert to fraction form
    528,423.93/729,203.76 = 286,697.25/x
  3. Step 3: Cross multiply
    528,423.93x = 729,203.76 × 286,697.25
  4. Step 4: Simplify right side
    528,423.93x = 209,060,712,681.66
  5. Step 5: Solve for x
    x = 209,060,712,681.66/528,423.93
  6. Step 6: Final answer
    x = 395,630.67

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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.