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Finding the Fourth Proportional to 528,038.25, 728,818.83 and 313,302.93

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Solution

The fourth proportional to 528,038.25, 728,818.83 and 313,302.93 is: 432,432.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,038.25 : 728,818.83 = 313,302.93 : x
  2. Step 2: Convert to fraction form
    528,038.25/728,818.83 = 313,302.93/x
  3. Step 3: Cross multiply
    528,038.25x = 728,818.83 × 313,302.93
  4. Step 4: Simplify right side
    528,038.25x = 228,341,074,878.17
  5. Step 5: Solve for x
    x = 228,341,074,878.17/528,038.25
  6. Step 6: Final answer
    x = 432,432.83

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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.