Home / 620,688,077.40-931,032,116.10-509,723,196.60

Finding the Fourth Proportional to 620,688,077.40, 931,032,116.10 and 509,723,196.60

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Solution

The fourth proportional to 620,688,077.40, 931,032,116.10 and 509,723,196.60 is: 764,584,794.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,688,077.40 : 931,032,116.10 = 509,723,196.60 : x
  2. Step 2: Convert to fraction form
    620,688,077.40/931,032,116.10 = 509,723,196.60/x
  3. Step 3: Cross multiply
    620,688,077.40x = 931,032,116.10 × 509,723,196.60
  4. Step 4: Simplify right side
    620,688,077.40x = 474,568,666,355,754,368
  5. Step 5: Solve for x
    x = 474,568,666,355,754,368/620,688,077.40
  6. Step 6: Final answer
    x = 764,584,794.90

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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.