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Finding the Fourth Proportional to 528,037.44, 728,672.40 and 286,316.16

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Solution

The fourth proportional to 528,037.44, 728,672.40 and 286,316.16 is: 395,105.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,037.44 : 728,672.40 = 286,316.16 : x
  2. Step 2: Convert to fraction form
    528,037.44/728,672.40 = 286,316.16/x
  3. Step 3: Cross multiply
    528,037.44x = 728,672.40 × 286,316.16
  4. Step 4: Simplify right side
    528,037.44x = 208,630,683,465.98
  5. Step 5: Solve for x
    x = 208,630,683,465.98/528,037.44
  6. Step 6: Final answer
    x = 395,105.85

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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.