Home / 738,146.89-1,018,430.40-480,403.27

Finding the Fourth Proportional to 738,146.89, 1,018,430.40 and 480,403.27

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Solution

The fourth proportional to 738,146.89, 1,018,430.40 and 480,403.27 is: 662,818.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,146.89 : 1,018,430.40 = 480,403.27 : x
  2. Step 2: Convert to fraction form
    738,146.89/1,018,430.40 = 480,403.27/x
  3. Step 3: Cross multiply
    738,146.89x = 1,018,430.40 × 480,403.27
  4. Step 4: Simplify right side
    738,146.89x = 489,257,294,427.41
  5. Step 5: Solve for x
    x = 489,257,294,427.41/738,146.89
  6. Step 6: Final answer
    x = 662,818.34

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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.