Home / 708,531,185,075.75-977,772,403,711.10-399,947,497,290.72

Finding the Fourth Proportional to 708,531,185,075.75, 977,772,403,711.10 and 399,947,497,290.72

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Solution

The fourth proportional to 708,531,185,075.75, 977,772,403,711.10 and 399,947,497,290.72 is: 551,927,189,686.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,531,185,075.75 : 977,772,403,711.10 = 399,947,497,290.72 : x
  2. Step 2: Convert to fraction form
    708,531,185,075.75/977,772,403,711.10 = 399,947,497,290.72/x
  3. Step 3: Cross multiply
    708,531,185,075.75x = 977,772,403,711.10 × 399,947,497,290.72
  4. Step 4: Simplify right side
    708,531,185,075.75x = 391,057,625,784,185,929,072,640
  5. Step 5: Solve for x
    x = 391,057,625,784,185,929,072,640/708,531,185,075.75
  6. Step 6: Final answer
    x = 551,927,189,686.62

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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.