Home / 740,017.47-1,021,224.09-400,485.72

Finding the Fourth Proportional to 740,017.47, 1,021,224.09 and 400,485.72

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Solution

The fourth proportional to 740,017.47, 1,021,224.09 and 400,485.72 is: 552,670.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,017.47 : 1,021,224.09 = 400,485.72 : x
  2. Step 2: Convert to fraction form
    740,017.47/1,021,224.09 = 400,485.72/x
  3. Step 3: Cross multiply
    740,017.47x = 1,021,224.09 × 400,485.72
  4. Step 4: Simplify right side
    740,017.47x = 408,985,662,411.94
  5. Step 5: Solve for x
    x = 408,985,662,411.94/740,017.47
  6. Step 6: Final answer
    x = 552,670.28

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Double scale
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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.