Home / 1,211,597,075.80-1,817,395,613.70-393,792,045.40

Finding the Fourth Proportional to 1,211,597,075.80, 1,817,395,613.70 and 393,792,045.40

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Solution

The fourth proportional to 1,211,597,075.80, 1,817,395,613.70 and 393,792,045.40 is: 590,688,068.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,597,075.80 : 1,817,395,613.70 = 393,792,045.40 : x
  2. Step 2: Convert to fraction form
    1,211,597,075.80/1,817,395,613.70 = 393,792,045.40/x
  3. Step 3: Cross multiply
    1,211,597,075.80x = 1,817,395,613.70 × 393,792,045.40
  4. Step 4: Simplify right side
    1,211,597,075.80x = 715,675,936,019,911,296
  5. Step 5: Solve for x
    x = 715,675,936,019,911,296/1,211,597,075.80
  6. Step 6: Final answer
    x = 590,688,068.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.