Home / 811,977,887.15-1,120,337,428.13-459,553,867.53

Finding the Fourth Proportional to 811,977,887.15, 1,120,337,428.13 and 459,553,867.53

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Solution

The fourth proportional to 811,977,887.15, 1,120,337,428.13 and 459,553,867.53 is: 634,075,639.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,977,887.15 : 1,120,337,428.13 = 459,553,867.53 : x
  2. Step 2: Convert to fraction form
    811,977,887.15/1,120,337,428.13 = 459,553,867.53/x
  3. Step 3: Cross multiply
    811,977,887.15x = 1,120,337,428.13 × 459,553,867.53
  4. Step 4: Simplify right side
    811,977,887.15x = 514,855,398,035,754,944
  5. Step 5: Solve for x
    x = 514,855,398,035,754,944/811,977,887.15
  6. Step 6: Final answer
    x = 634,075,639.48

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Double scale
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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.