Home / 776,683.74-1,071,271.46-518,430.48

Finding the Fourth Proportional to 776,683.74, 1,071,271.46 and 518,430.48

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Solution

The fourth proportional to 776,683.74, 1,071,271.46 and 518,430.48 is: 715,065.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,683.74 : 1,071,271.46 = 518,430.48 : x
  2. Step 2: Convert to fraction form
    776,683.74/1,071,271.46 = 518,430.48/x
  3. Step 3: Cross multiply
    776,683.74x = 1,071,271.46 × 518,430.48
  4. Step 4: Simplify right side
    776,683.74x = 555,379,774,625.95
  5. Step 5: Solve for x
    x = 555,379,774,625.95/776,683.74
  6. Step 6: Final answer
    x = 715,065.54

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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.