Home / 663,510,811.50-915,645,313.80-370,155,379.50

Finding the Fourth Proportional to 663,510,811.50, 915,645,313.80 and 370,155,379.50

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Solution

The fourth proportional to 663,510,811.50, 915,645,313.80 and 370,155,379.50 is: 510,814,643.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,510,811.50 : 915,645,313.80 = 370,155,379.50 : x
  2. Step 2: Convert to fraction form
    663,510,811.50/915,645,313.80 = 370,155,379.50/x
  3. Step 3: Cross multiply
    663,510,811.50x = 915,645,313.80 × 370,155,379.50
  4. Step 4: Simplify right side
    663,510,811.50x = 338,931,038,617,035,584
  5. Step 5: Solve for x
    x = 338,931,038,617,035,584/663,510,811.50
  6. Step 6: Final answer
    x = 510,814,643.47

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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.