Home / 684,280.80-1,026,518.40-210,916.80

Finding the Fourth Proportional to 684,280.80, 1,026,518.40 and 210,916.80

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Solution

The fourth proportional to 684,280.80, 1,026,518.40 and 210,916.80 is: 316,405.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,280.80 : 1,026,518.40 = 210,916.80 : x
  2. Step 2: Convert to fraction form
    684,280.80/1,026,518.40 = 210,916.80/x
  3. Step 3: Cross multiply
    684,280.80x = 1,026,518.40 × 210,916.80
  4. Step 4: Simplify right side
    684,280.80x = 216,509,976,069.12
  5. Step 5: Solve for x
    x = 216,509,976,069.12/684,280.80
  6. Step 6: Final answer
    x = 316,405.16

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1.5x scale

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.