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Finding the Fourth Proportional to 528,545.79, 729,393.65 and 286,828.36

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Solution

The fourth proportional to 528,545.79, 729,393.65 and 286,828.36 is: 395,823.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,545.79 : 729,393.65 = 286,828.36 : x
  2. Step 2: Convert to fraction form
    528,545.79/729,393.65 = 286,828.36/x
  3. Step 3: Cross multiply
    528,545.79x = 729,393.65 × 286,828.36
  4. Step 4: Simplify right side
    528,545.79x = 209,210,784,423.91
  5. Step 5: Solve for x
    x = 209,210,784,423.91/528,545.79
  6. Step 6: Final answer
    x = 395,823.39

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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.