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Finding the Fourth Proportional to 528,168.48, 728,870.40 and 286,450.08

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Solution

The fourth proportional to 528,168.48, 728,870.40 and 286,450.08 is: 395,299.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,168.48 : 728,870.40 = 286,450.08 : x
  2. Step 2: Convert to fraction form
    528,168.48/728,870.40 = 286,450.08/x
  3. Step 3: Cross multiply
    528,168.48x = 728,870.40 × 286,450.08
  4. Step 4: Simplify right side
    528,168.48x = 208,784,984,389.63
  5. Step 5: Solve for x
    x = 208,784,984,389.63/528,168.48
  6. Step 6: Final answer
    x = 395,299.97

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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.