Home / 920,400.49-1,270,140.56-506,929.33

Finding the Fourth Proportional to 920,400.49, 1,270,140.56 and 506,929.33

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Solution

The fourth proportional to 920,400.49, 1,270,140.56 and 506,929.33 is: 699,555.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,400.49 : 1,270,140.56 = 506,929.33 : x
  2. Step 2: Convert to fraction form
    920,400.49/1,270,140.56 = 506,929.33/x
  3. Step 3: Cross multiply
    920,400.49x = 1,270,140.56 × 506,929.33
  4. Step 4: Simplify right side
    920,400.49x = 643,871,496,735.92
  5. Step 5: Solve for x
    x = 643,871,496,735.92/920,400.49
  6. Step 6: Final answer
    x = 699,555.80

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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.