Home / 1,389,075,120.10-1,916,853,269.61-824,584,130.74

Finding the Fourth Proportional to 1,389,075,120.10, 1,916,853,269.61 and 824,584,130.74

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Solution

The fourth proportional to 1,389,075,120.10, 1,916,853,269.61 and 824,584,130.74 is: 1,137,884,311.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,075,120.10 : 1,916,853,269.61 = 824,584,130.74 : x
  2. Step 2: Convert to fraction form
    1,389,075,120.10/1,916,853,269.61 = 824,584,130.74/x
  3. Step 3: Cross multiply
    1,389,075,120.10x = 1,916,853,269.61 × 824,584,130.74
  4. Step 4: Simplify right side
    1,389,075,120.10x = 1,580,606,787,077,488,640
  5. Step 5: Solve for x
    x = 1,580,606,787,077,488,640/1,389,075,120.10
  6. Step 6: Final answer
    x = 1,137,884,311.80

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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.