Home / 811,977,889.65-1,120,337,431.58-459,553,870.03

Finding the Fourth Proportional to 811,977,889.65, 1,120,337,431.58 and 459,553,870.03

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Solution

The fourth proportional to 811,977,889.65, 1,120,337,431.58 and 459,553,870.03 is: 634,075,642.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,977,889.65 : 1,120,337,431.58 = 459,553,870.03 : x
  2. Step 2: Convert to fraction form
    811,977,889.65/1,120,337,431.58 = 459,553,870.03/x
  3. Step 3: Cross multiply
    811,977,889.65x = 1,120,337,431.58 × 459,553,870.03
  4. Step 4: Simplify right side
    811,977,889.65x = 514,855,402,422,059,264
  5. Step 5: Solve for x
    x = 514,855,402,422,059,264/811,977,889.65
  6. Step 6: Final answer
    x = 634,075,642.93

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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.