Home / 739,640,762.78-1,020,704,802.93-400,551,870.47

Finding the Fourth Proportional to 739,640,762.78, 1,020,704,802.93 and 400,551,870.47

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Solution

The fourth proportional to 739,640,762.78, 1,020,704,802.93 and 400,551,870.47 is: 552,761,879.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,640,762.78 : 1,020,704,802.93 = 400,551,870.47 : x
  2. Step 2: Convert to fraction form
    739,640,762.78/1,020,704,802.93 = 400,551,870.47/x
  3. Step 3: Cross multiply
    739,640,762.78x = 1,020,704,802.93 × 400,551,870.47
  4. Step 4: Simplify right side
    739,640,762.78x = 408,845,218,006,220,672
  5. Step 5: Solve for x
    x = 408,845,218,006,220,672/739,640,762.78
  6. Step 6: Final answer
    x = 552,761,879.25

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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.