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Finding the Fourth Proportional to 528,038.44, 728,673.78 and 286,317.16

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Solution

The fourth proportional to 528,038.44, 728,673.78 and 286,317.16 is: 395,107.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,038.44 : 728,673.78 = 286,317.16 : x
  2. Step 2: Convert to fraction form
    528,038.44/728,673.78 = 286,317.16/x
  3. Step 3: Cross multiply
    528,038.44x = 728,673.78 × 286,317.16
  4. Step 4: Simplify right side
    528,038.44x = 208,631,807,256.07
  5. Step 5: Solve for x
    x = 208,631,807,256.07/528,038.44
  6. Step 6: Final answer
    x = 395,107.23

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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.